Related topics: nasa , moon , space shuttle , ares ix
Rocket
hideA rocket or rocket vehicle is a missile, spacecraft, aircraft or other vehicle which obtains thrust by the reaction of the rocket to the ejection of fast moving fluid exhaust from a rocket engine. Chemical rockets create their exhaust by the combustion of rocket propellant. The action of the exhaust against the inside of combustion chambers and expansion nozzles is able to accelerate the gas to hypersonic speed, and this exerts a large reactive thrust on the rocket (an equal and opposite reaction in accordance with Newton's third law).
Rockets, in the form of military and recreational uses, date back to at least the 13th century. Widespread military, scientific, and industrial use did not occur until the 20th century, when rocketry was the enabling technology of the Space Age, including setting foot on the moon.
Rockets are used for fireworks, weaponry, ejection seats, launch vehicles for artificial satellites, human spaceflight and exploration of other planets. While comparatively inefficient for low speed use, they are very lightweight and powerful, capable of generating large accelerations and of attaining extremely high speeds with reasonable efficiency.
Chemical rockets store a large amount of energy in an easily-released form, and can be very dangerous. However, careful design, testing, construction and use minimizes risks.
For more information about Rocket, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
News tagged with rocket
Design chosen for British 1,000 mph car (w/ Video)
Nov 25, 2009 |
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(PhysOrg.com) -- A British team hoping to be the first to get a car to 1,000 mph (1,610 km/h) has made its final design selection. The six-tonne car, known as the Bloodhound, will be powered by a Eurofighter ...
NASA puzzled why parachutes failed in rocket test
Space & Earth / Space Exploration
Dec 03, 2009 |
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(AP) -- NASA still isn't sure why two parachutes failed during a test flight of its prototype moon rocket just over a month ago.
WISE Launch Delayed 24 Hours
Space & Earth / Space Exploration
Dec 10, 2009 |
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(PhysOrg.com) -- Liftoff of a Delta II rocket and its NASA payload, the Wide-field Infrared Survey Explorer (WISE), has been delayed 24 hours. At the soonest, launch now will be Saturday, Dec. 12, during a ...
NASA Buys Additional Space Shuttle Reusable Solid Rocket Motors
Space & Earth / Space Exploration
Dec 16, 2009 |
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(PhysOrg.com) -- NASA has purchased two reusable solid rocket motors from ATK Launch Systems Inc. of Brigham City, Utah, to provide a "launch on need" rescue capability for the final planned space shuttle mission, targeted ...
Orion Launch Abort System Attitude Control Motor Lights Up Sky
Space & Earth / Space Exploration
Dec 17, 2009 |
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(PhysOrg.com) -- It looked like a light show in Elkton, Md., on Tuesday, Dec. 15, as NASA ground tested a full-scale attitude control motor, or ACM. The motor operated with precision as its elaborate eight-valve ...
Calif. space tourism firm launches S. Korea deal
Space & Earth / Space Exploration
12 hours ago |
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(AP) -- A California company developing a rocket plane for space tourism announced Thursday that it has an agreement with a nonprofit group in South Korea to conduct launches in that nation.
Steering the Ares Rockets on a Straight Path
Space & Earth / Space Exploration
Dec 04, 2009 |
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(PhysOrg.com) -- The Ares I-X rocket stood more than 325 feet tall on the launch pad at NASA's Kennedy Space Center, Fla. Spectators watched in awe as its massive solid rocket motor blazed to life with a thunderous ...
Rocket launches Air Force satellite from Fla.
Space & Earth / Space Exploration
Dec 06, 2009 |
5 / 5 (1) |
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(AP) -- A rocket carrying an Air Force satellite that will be used by the military has launched from Cape Canaveral.
Missile defense test aborted when target fails
Space & Earth / Space Exploration
Dec 12, 2009 |
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(AP) -- The Missile Defense Agency says a planned test of a ground-based missile defense system in Hawaii was aborted because the target missile failed.
Rocket science leads to new whale discovery
Nov 24, 2009 |
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Rocket science is opening new doors to understanding how sounds associated with Navy sonar might affect the hearing of a marine mammal - or if they hear it at all.
